115891545 has 64 divisors (see below), whose sum is σ = 243394560. Its totient is φ = 45619200.

The previous prime is 115891483. The next prime is 115891553. The reversal of 115891545 is 545198511.

It is a happy number.

It is not a de Polignac number, because 115891545 - 2⁶ = 115891481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19305 + ... + 24585.

It is an arithmetic number, because the mean of its divisors is an integer number (3803040).

Almost surely, 2^115891545 is an apocalyptic number.

115891545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115891545 is an abundant number, since it is smaller than the sum of its proper divisors (127503015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115891545 is a wasteful number, since it uses less digits than its factorization.

115891545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326.

The product of its digits is 36000, while the sum is 39.

The square root of 115891545 is about 10765.2935398901. The cubic root of 115891545 is about 487.5478559200.

The spelling of 115891545 in words is "one hundred fifteen million, eight hundred ninety-one thousand, five hundred forty-five".